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Forums->Hot Heads Tech Talk->1956 Truck 354 Hemi help

walt460
1956 Truck 354 Hemi help


We have what we think is a 1956 354 Truck Hemi. It has a bell-housing, flywheel & clutch still attached. We bought it cheap off the floor of an old garage. It cranks over, but does not start, compression is low. We do not know the history of this motor other than it is an early truck hemi (distributor in back, no water outlet in front of heads, etc.) and block number decodes to 1956 354.

Worked on a lot of engines, but never a Hemi, and there does not seem to be much information on the web.

We are trying to figure out exactly what this engine really is, and see if we can get it to run.
What should cranking compression be?
What is correct firing order?

Who out there has any knowledge of these engines and can help us get it running and then figure out what trans will bolt up to it?

any info please email me at walt460@yahoo.com. I can provide photos o this engine.
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on: Sat 13 of Jun, 2015 [15:52 UTC] reads: 15848

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George
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Re: 1956 Truck 354 Hemi help
on: Sun 14 of Jun, 2015 [16:51 UTC] score: 0.00
firing order 1-8-4-3-6-5-7-2. advertised C/R on truck engines is in the 7-7.5 range. Car 354s are 9:1, but some hemis measure out as much as almost a full point below advertised. Where you have the casting number you have a 354, unless it's underbored to only 331 as a replacement engine. Should be a use code in front of the valley cover, or possibly on the front of the block below the driver's side head. Any bell for a hemi, hemi based Poly or "A" Poly up to '61 will bolt up. For a modern tranny you need a 392-to-modern adaptor. For schooling www.jalopyjournal.com click on The HAMB & then put "Hemi Tech Index" in search.

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walt460
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Re: Re: 1956 Truck 354 Hemi help
on: Sun 14 of Jun, 2015 [17:30 UTC] score: 0.00
> firing order 1-8-4-3-6-5-7-2. advertised C/R on truck engines is in the 7-7.5 range. Car 354s are 9:1, but some hemis measure out as much as almost a full point below advertised. Where you have the casting number you have a 354, unless it's underbored to only 331 as a replacement engine. Should be a use code in front of the valley cover, or possibly on the front of the block below the driver's side head. Any bell for a hemi, hemi based Poly or "A" Poly up to '61 will bolt up. For a modern tranny you need a 392-to-modern adaptor. For schooling www.jalopyjournal.com click on The HAMB & then put "Hemi Tech Index" in search.


George, Thanks for the info!


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